package com.ThreadStudy.syn;
/*
*
* 测试生产者消费者问题,信号灯法,标志位解决
*
*
* */
public class PCTest2 {

    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }

}


// 生产者:演员
class Player extends Thread{
    TV tv;
    public Player(TV tv){
        this.tv = tv;
    }


    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if(i%2==0){
                this.tv.play("表演快乐大本营");
            }else {
                this.tv.play("广告时刻");
            }
        }
    }
}



// 消费者:观众
class Watcher extends Thread{
    TV tv;
    public Watcher(TV tv){
        this.tv = tv;
    }


    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}

// 产品:节目
class TV{
    // 演员表演,观众等待 T
    // 观众观看,演员等待 F
    String voice; // 表演节目
    boolean flag = true;


    // 表演

    public synchronized void play(String voice){

        if(!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        System.out.println("演员表演了:"+voice);
        // 通知观众观看'
        this.notifyAll(); // 通知观众观看
        this.voice = voice;
        this.flag = !this.flag;
    }


    // 观看

    public synchronized void watch(){
        if(flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了:"+voice);
        // 通知演员表演
        this.notifyAll();
        this.flag=!this.flag;
    }


}

